Keyword effectiveness index is a parameter that tests the effectiveness of a keyword in terms of its popularity and demand. Technically, KEI is the keyword demand divided by its popularity in terms of usage. it is the job of seo services provider to ensure that the keywords used are effective and serve the purpose.
When you hire professional seo services provider, you should see to it that they are aware of the effectiveness of the keywords used. The popularity of keyword is the number of web merchants that use who optimize their website using those keywords. If the keyword is very popular, it is sought after by many web merchants. As a result, even if the seo services provider is using this word, you will have to face a tough competition in optimizing the website. It may take time of for you to achieve a high page rank. Another parameter that the seo services provider must be aware of is the demand of the keyword. The demand of a keyword is the number of users who use that keyword when they are looking for information on that niche. Ideally, the seo services must use keywords that are in high demand. The keyword effectiveness index is best for that word that which has low popularity and high demand. But it is difficult for the seo services provider to find keywords which such requirements. Thus, there should be a balance between the keywords that are in high and low demand. Such keywords have a high KEI. Thus, when the SEO company is selecting keywords, he should the words with a high KEI. It will give the best chance for your website to appear high in the page results.
There are a few factors on which the KEI of the keyword depends which the seo services provider must be aware of. Kei increases with the popularity of the word. Another variation of this axiom that the seo services must be aware of is that with the increase in competition the KEI decreases. Thus, if many web merchants are using that word in their web article, its KEI is affected negatively. Competitiveness of a keyword is nothing but the number of web sites that use that keyword.
Another important implication of KEI that the seo services company must be aware of is the impact of competitiveness and demand of keywords on KEI. If both the factors increase simultaneously, the final impact will depend on the magnitude of each increase. If both increase by same extent, the KEI will eventually increase.
One flipside of KEI parameter that the seo services should take into account is that this index doe not say anything about the quality of the competition. The competition may be less but the competitors may be high budget companies with expert seo services providers. In that case, even if the competition is less, you will have to take more efforts to obtain high page rank.